CN105821320A - Alloy material for marine drilling platform brine system and preparing method thereof - Google Patents
Alloy material for marine drilling platform brine system and preparing method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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Abstract
The invention provides an alloy material for a marine drilling platform brine system and a preparing method thereof. The alloy material is prepared from C, Mn, S, P, B, V, Ti, Nb, Ta, Co, Si, Cr, Ni, Cu, La and Lu, and the balance Fe; the metal raw materials and the non-metal materials are sintered at the temperature of 960-980 DEG C in vacuum, under the inert gas pressurization condition, the product is cooled to 630 DEG C for tempering and heated to 950 DEG C for annealing, and finally the temperature is reduced to the room temperature to obtain the alloy material used for the marine drilling platform brine system. The alloy material for the marine drilling platform brine system is good in rust prevention and pressure resistance and not prone to deformation.
Description
Technical field
The invention belongs to ferrous alloy field, be specifically related to a kind of marine drilling platform brine system alloy material and preparation method thereof.
Background technology
In marine drilling platform technology evolution, the western developed country such as the U.S., Norway have accumulated certain experiences already due to starting, in terms of ocean deepwater technological development, especially it is constantly in leading and monopoly position, but along with multiple country of the world set foot in marine exploration and development field in recent years, the especially emergence of China, Brazil, Korea S, Japan and other countries, from now on marine settings technology will present by all kinds of means, multilateralization, the development situation that a hundred flowers blossom.In the later stage nineties 20th century, part drilling platforms starts to develop to multifunction direction.Novel Multifunctional marine platform not only has drilling well function, is also equipped with well workover simultaneously, recovers the oil, lives and the several functions such as power.As having the FPSO of dynamic positioning device, possess above-mentioned functions the most completely, and be also used as shuttle tanker, it is achieved the target of ship one marine large oilfield of exploitation.Multi-functional semisubmersible drilling platform can be used not only as drilling platforms, it is possible to as production platform, lifting platform, pipe laying platform, accommodation platform and marine scientific base, even can be used as missile launching platform etc., the scope of application is more and more wider.
The generally mesohalobic effect of marine drilling platform is used to allocate DWM liquid, and saline is used to prepare water-base mud, and they are containing the isoionic chemical salt solutions of Na, Ca, Mg, Cl, Br, K.The structure cabin being specifically designed to dress saline is had in platform structure, be usually 2 or more than, these cabins and common ballast tank are somewhat similar, the saline on platform be by injection station enter into platform salt water tank, lighter each place needing saline by brine pump.Easily separate out crystallization after saline evaporation, thin pipeline can be blocked, so the selection of the selection of the various instrument of brine system and brine system material is particularly significant.But, marine drilling platform this still in the most perfect technology, the material of marine drilling platform brine system is in a great extent to be groped and continuous experimental stage, how to select and to manufacture good brine system material antirust, pressure, on-deformable, being when previous urgent problem.
Summary of the invention
In order to overcome above-mentioned deficiency, it is an object of the invention to provide a kind of marine drilling platform brine system alloy material and preparation method thereof, consider the cost of each composition, optimize the ratio between each composition, find the material prescription that cost performance is the highest, add rare earth metal, it is possible to efficiently solve the problems referred to above.
In order to solve above-mentioned technical problem, the present invention takes following technical scheme:
nullA kind of marine drilling platform brine system alloy material，The material composition of described alloy material and mass percent thereof be: C:0.16% ~ 0.24%，Mn:0.35% ~ 0.65%，S:0.03% ~ 0.04%，P:0.03% ~ 0.04%，B:1.90% ~ 2.20%，V:1.90% ~ 2.20%，Ti:1.30% ~ 1.70%，Nb:1.90% ~ 2.20%，Ta:1.90% ~ 2.20%，Co:0.30% ~ 0.40%，Si:0.60% ~ 1.50%，Cr:11.5% ~ 14.0%，Ni:1.90% ~ 2.20%，Cu:1.90% ~ 2.20%，RE:0.20% ~ 0.90%，Remaining is Fe.
Further, RE includes, Pr:0.10% ~ 0.45%, Ce:0.10% ~ 0.45%, and remaining is Fe.
Further, material composition and mass percent thereof are: C:0.21%, Mn:0.36%, S:0.03%, P:0.03%, B:1.92%, V:1.92%, Ti:1.37%, Nb:1.92%, Ta:1.92%, Co:0.34%, Si:1.0%, Cr:13.0%, Ni:1.92%, Cu:1.92%, La:0.25%, Lu:0.35%, remaining is Fe.
Hereinafter, the restriction reason being grouped into the one-tenth of the alloy of employing in the present invention illustrates, and becomes the % related in being grouped into refer to quality %.
C:0.16% ~ 0.24%, C can form solid solution tissue in steel, improve the intensity of steel；Formation carbide tissue, can improve hardness and the wearability of steel.Therefore, C is in steel, and phosphorus content is the highest, and the intensity of steel, hardness are the highest, but plasticity, toughness also can decrease;Otherwise, phosphorus content is the lowest, and the plasticity of steel, toughness are the highest, and its intensity, hardness also can decrease, and for adapting to ocean condition and job requirements effect, C content in marine drilling platform brine system material is defined as 0.16% ~ 0.24% by the present invention, and preferably 0.21%.
Mn:0.35% ~ 0.65%, Mn is interpolation Mn in a kind of weak alloy deoxidizer, is not only advantageous to the corrosion stability of alloy, and the intensity of alloy can also be made to improve, and can reduce hot cracking tendency, improve corrosion resistance and the welding performance of alloy.Along with Mn content increases, alloy strength increases, and for adapting to the concrete actual specific demand of marine drilling platform brine system, Mn content is defined as 0.35% ~ 0.65% by the present invention, and preferably 0.36%.
P:0.03% ~ 0.04%, P can improve intensity, but seriously reduce plasticity, impact flexibility, cold-bending property and solderability, especially occurring cold short during low temperature, content need to strictly control, and is usually no more than 0.050%, less than 0.045% in Welding Structure, in view of the concrete reality of navigation operation, P content is defined as 0.03% ~ 0.04% by the present invention, and preferably 0.03%.
S:0.03% ~ 0.04%, S can cause alloy hot-short, drop low-alloyed plasticity, impact flexibility, fatigue strength etc., and a certain amount of S Yu Mn forms MnS in steel, is favorably improved the element of machinability.When less than 0.001%, additive effect is insufficient, saturated more than 0.15% additive effect, makes foundry goods produce pore, be difficult to cutting and reduce its toughness, therefore S is defined as 0.03% ~ 0.04%, and preferably 0.03%.
B:1.90% ~ 2.20% trace B prevents the formation of ferrite nucleus on crystal boundary, thus extends the stage of incubation of austenite, improves the quenching degree of steel.But with the increase of carbon content in steel, this kind of effect gradually weakens so that being wholly absent.In view of the concrete reality of navigation operation, B content is defined as 1.90% ~ 2.20% by the present invention, and preferably 1.92%.
V:1.90% ~ 2.20%, the nucleus of the cenotype that the fine particle of V is formed, will reduce the quenching degree of steel.Increase steel belt roof bolt stability and have strong post-curing effect.It is solid-solution in ferrite and has extremely strong solid solution solution strengthening effect.Having Grain refinement, so favourable to low-temperature impact toughness, vanadium carbide is the most wear-resisting in metal carbides, can improve the service life of tool steel.For adapting to ocean condition and the specific demand of marine drilling platform brine system, V content in alloy material is defined as 1.90% ~ 2.20% by the present invention, and preferably 1.92%.
Ta:1.90% ~ 2.20%, Ta can significantly improve the quenching degree of steel, and crystal grain thinning also reduces the quenching degree of steel.Increase steel belt roof bolt stability, have post-curing effect.Trace Ta in the case of the plasticity not affecting steel or toughness, can improve the intensity of steel.For adapting to ocean condition and the specific demand of marine drilling platform brine system, Ta content in material is defined as 1.90% ~ 2.20% by the present invention, and preferably 1.92%.
Ti:1.30% ~ 1.70%, Ti is addition element conventional in alloy, plays refinement cast sturcture and the effect of seam organization；Alterant effect can also be played, increase nucleus, crystal grain thinning.In view of the concrete reality of aviation, for adapting to nautical climate condition and job requirements effect, Zr content is defined as 1.30% ~ 1.70% by the present invention, and preferably 1.37%.
Nb:1.90% ~ 2.20%, Nb can significantly improve the quenching degree of steel, and crystal grain thinning also reduces the quenching degree of steel.Increase steel belt roof bolt stability, have post-curing effect.Trace Nb in the case of the plasticity not affecting steel or toughness, can improve the intensity of steel.For adapting to ocean condition and the specific demand of marine drilling platform brine system, Nb content in material is defined as 1.90% ~ 2.20% by the present invention, and preferably 1.92%.
Ta:1.90% ~ 2.20%, Ta can significantly improve the quenching degree of steel, and crystal grain thinning also reduces the quenching degree of steel.Increase steel belt roof bolt stability, have post-curing effect.Trace Ta in the case of the plasticity not affecting steel or toughness, can improve the intensity of steel.For adapting to ocean condition and the specific demand of marine drilling platform brine system, Ta content in material is defined as 1.90% ~ 2.20% by the present invention, and preferably 1.92%.
Co:0.30% ~ 0.40%, Co can improve and improve the high-temperature behavior of steel, increase it and resist rigid, put forward heavy alloyed non-oxidizability and corrosion resisting property, for adapting to ocean condition and the specific demand of marine drilling platform brine system, Co content in material is defined as 0.30% ~ 0.40% by the present invention, and preferably 0.34%.
Si:0.60% ~ 1.50%, silicon is the essential element of most of pack alloy.It can improve the casting character of alloy, can carry heavy alloyed high temperature formative nature, reduces shrinkage factor, without hot cracking tendency.For adapting to ocean condition and the specific demand of marine drilling platform brine system, Si content is defined as 0.60% ~ 1.50% by the present invention, and preferably 1.0%.
Cr:11.5% ~ 14.0%, chromium can form intermetallic compound in aluminum, hinders forming core and the growth process of recrystallization, has certain invigoration effect to alloy, moreover it is possible to improves alloy ductility and reduces stress corrosion opening cracking maleate sensitivity.But meeting-place increases quenching sensitive, and making anode oxide film is yellow, and Cr content in alloy material is defined as 11.5% ~ 14.0% by the present invention, preferably 13.0%.
Ni:1.90% ~ 2.20%, nickel can put forward heavy alloyed intensity and hardness in the alloy, reduces corrosion resistance.Nickel, as the effect of ferrum, can reduce the alloy corrode to mould, can neutralize again the adverse effect of ferrum simultaneously, put forward heavy alloyed welding performance.For adapting to ocean condition and the specific demand of marine drilling platform brine system, Ni content in material is defined as 1.90% ~ 2.20% by the present invention, and preferably 1.92%.
Cu:1.90% ~ 2.20%, copper can improve intensity and the toughness of steel alloy, particularly atmospheric corrosion performance.For adapting to ocean condition and the specific demand of marine drilling platform brine system, Cu content in material is defined as 1.90% ~ 2.20% by the present invention, and preferably 1.92%.
RE:0.20% ~ 0.90%, rare earth element adds in alloy, it is possible to increase the mechanical strength of alloy material and corrosion resistance, increase constitutional supercooling, crystal grain thinning when making alloy casting, reduce secondary intergranular away from, reduce the gas in alloy and be mingled with, and making constituent phases tend to nodularization.Also can reduce smelt surface tension, increase mobility, beneficially casting ingot-forming, processing performance is had a significant impact；Rare earth metal can also eliminate the harmful effect to marine drilling platform brine system of the hydrological environment of magnetic field and complexity, thus improves the service life of marine drilling platform；Simultaneously under conditions of load is identical, hence it is evident that alleviate structural member weight.For adapting to ocean condition and the specific demand of marine drilling platform brine system, RE content in material is defined as 0.20% ~ 0.90% by the present invention, including La:0.10% ~ 0.45%, Lu:0.10% ~ 0.45%, preferably La:0.25%, Lu:0.35%.The rare earth metal content used in the present invention is less, but can play good demagnetization and increase the strength of materials, the effect of wearability, advantageously reduces cost.
Another object of the present invention, is to provide the preparation method of a kind of marine drilling platform brine system alloy material, and making step is as follows:
Step a, will treat that Fe, Mn, V, Ti, Nb, T, Co, Cr, Ni, Cu, RE simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 960 DEG C ~ 980 DEG C；
Step b, under conditions of metal melting, add C, S, P, B, Si simple substance according to material composition ratio, and be incubated 25min ~ 50min, stir；
Step c, at noble gas pressurized conditions borehole cooling to 630 DEG C of tempering, be incubated 25min ~ 40min, then be warming up to 950 DEG C of annealing, insulation 25min ~ 40min, be finally cooled to room temperature, obtain marine drilling platform brine system alloy material finished product.
Further, in step a, when the temperature of sintering is 960 DEG C ~ 970 DEG C, RE consists of La.
Further, in step a, when the temperature of sintering is 970 DEG C ~ 980 DEG C, RE consists of La and Lu.
Further, step S03 particularly as follows:
, under neon or argon gas atmosphere, under the pressurized conditions that pressure is 45MPa ~ 55MPa, be cooled to 630 DEG C of tempering with the speed of 45 DEG C/min ~ 55 DEG C/min, be incubated 15min ~ 40min；
, again with the ramp of 45 DEG C/min ~ 55 DEG C/min to 950 DEG C of annealing, be incubated 15min ~ 40min；
, be finally cooled to room temperature, obtain marine drilling platform compressed air system alloy material finished product.
The invention have the advantage that
Marine drilling platform brine system alloy material finished product provided by the present invention, the material of preparation has good performance antirust, pressure, on-deformable.
Detailed description of the invention
The specific embodiment of the present invention given below, is used for being described in further detail the present invention.
Embodiment 1
Raw material components:
C:0.21%, Mn:0.36%, S:0.03%, P:0.03%, B:1.92%, V:1.92%, Ti:1.37%, Nb:1.92%, Ta:1.92%, Co:0.34%, Si:1.0%, Cr:13.0%, Ni:1.92%, Cu:1.92%, La:0.25%, Lu:0.35%, remaining is Fe.
It is prepared via a method which:
Step a, will treat that Fe, Mn, Ti, Nb, Ta, Co, Cr, Ni, Cu, La, Lu simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 975 DEG C；
Step b, under conditions of metal melting, add C, S, P, B, V, Si simple substance according to material composition ratio, and be incubated 36min, stir；
Step c, neon pressurization 47MPa under the conditions of, it is cooled to 630 DEG C with the rate of temperature fall of 64 DEG C/min, insulation 36min, it is warming up to 950 DEG C of insulation 36min annealing with the heating rate of 64 DEG C/min again, is finally down to room temperature with the rate of temperature fall of 64 DEG C/min and obtains marine drilling platform brine system alloy material finished product.
Embodiment 2
Raw material components:
C:0.16%, Mn:0.35%, S:0.03%, P:0.03%, B:1.90%, V:1.90%, Ti:1.30%, Nb:1.90%, Ta:1.90%, Co:0.30%, Si:0.60%, Cr:11.5%, Ni:1.90%, Cu:1.90%, La:0.20%, remaining is Fe.
It is prepared via a method which:
Step a, will treat that Fe, Mn, Ti, Nb, Ta, Co, Cr, Ni, Cu, La simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 960 DEG C；
Step b, under conditions of metal melting, add C, S, P, B, V, Si simple substance according to material composition ratio, and be incubated 25min, stir；
Step c, neon pressurization 45MPa under the conditions of, it is cooled to 630 DEG C with the rate of temperature fall of 45 DEG C/min, insulation 25min, it is warming up to 950 DEG C of insulation 25min annealing with the heating rate of 45 DEG C/min again, is finally down to room temperature with the rate of temperature fall of 45 DEG C/min and obtains marine drilling platform brine system alloy material finished product.
Embodiment 3
Raw material components:
C:0.24%, Mn:0.65%, S:0.04%, P:0.04%, B:2.20%, V:2.20%, Ti:1.70%, Nb:2.20%, Ta:2.20%, Co:0.40%, Si:1.50%, Cr:14.0%, Ni:2.20%, Cu:2.20%, La:0.45%, Lu:0.45%, remaining is Fe.
It is prepared via a method which:
Step a, will treat that Fe, Mn, Ti, Nb, Ta, Co, Cr, Ni, Cu, La, Lu simple substance of melting adds in the vacuum chamber of water jacketed copper crucible according to material composition ratio, evacuation, melted under the conditions of sintering temperature is 980 DEG C；
Step b, under conditions of metal melting according to material composition ratio add C, S, P, B, V, Si simple substance, stir, and be incubated 50min；
Step c, under the conditions of argon pressurization 55MPa, it is cooled to 630 DEG C with the rate of temperature fall of 55 DEG C/min, insulation 40min, it is warming up to 950 DEG C of insulation 40min annealing with the heating rate of 55 DEG C/min again, is finally down to room temperature with the rate of temperature fall of 55 DEG C/min and obtains marine drilling platform brine system alloy material finished product.
Embodiment 4
Raw material components:
C:0.24%, Mn:0.65%, S:0.04%, P:0.04%, B:2.20%, V:2.20%, Ti:1.70%, Nb:2.20%, Ta:2.20%, Co:0.40%, Si:1.50%, Cr:14.0%, Ni:2.20%, Cu:2.20%, La:0.45%, Lu:0.45%, remaining is Fe.
It is prepared via a method which:
Step a, will treat that Fe, Mn, Ti, Nb, Ta, Co, Cr, Ni, Cu, La, Lu simple substance of melting adds in the vacuum chamber of water jacketed copper crucible according to material composition ratio, evacuation, melted under the conditions of sintering temperature is 970 DEG C；
Step b, under conditions of metal melting according to material composition ratio add C, S, P, B, V, Si simple substance, stir, and be incubated 38min；
Step c, under the conditions of argon pressurization 50MPa, it is cooled to 630 DEG C with the rate of temperature fall of 50 DEG C/min, insulation 33min, it is warming up to 950 DEG C of insulation 33min annealing with the heating rate of 50 DEG C/min again, is finally down to room temperature with the rate of temperature fall of 50 DEG C/min and obtains marine drilling platform brine system alloy material finished product.
Experimental example 1
Wear resistence contrast test:
The embodiment of the present invention 1 ~ 4 made marine drilling platform brine system alloy material and common brine system alloy material do slurry (quartz sand+water) wet grinding on jetting type erosive-corrosive wear testing machine and test, and make the corrosion resistance test of material, and performance is shown in Table 1.
Table 1 wear resistence and hardness balance's result of the test
| Material | Anticorrosive multiplying power | The wear-resistant multiplying power of wet grinding | Hardness (HB) |
| Ordinary salt water system integration gold copper-base alloy | 1.0 | 1.0 | 140 |
| Embodiment 1 prepares alloy material | 2.76 | 1.39 | 187 |
| Embodiment 2 prepares alloy material | 2.70 | 1.37 | 186 |
| Embodiment 3 prepares alloy material | 2.74 | 1.35 | 185 |
| Embodiment 4 prepares alloy material | 2.75 | 1.36 | 184 |
Experimental example 2
By made for the embodiment of the present invention 1 ~ 4 marine drilling platform brine system alloy material compared with common brine system material, its results of property such as table 2 below.
Table 2 base metal characteristic performance compares
From above-mentioned test example, the properties of alloy material of the present invention is above common brine system alloy material, and the special material consumption preparing alloy of the present invention is few, and relative cost is low, is more suitable for for marine drilling platform brine system alloy material.
These are only the preferred embodiments of the present invention and experimental example, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
- null1. a marine drilling platform brine system alloy material，It is characterized in that，The material composition of described alloy material and mass percent thereof be: includes C:0.16% ~ 0.24%，Mn:0.35% ~ 0.65%，S:0.03% ~ 0.04%，P:0.03% ~ 0.04%，B:1.90% ~ 2.20%，V:1.90% ~ 2.20%，Ti:1.30% ~ 1.70%，Nb:1.90% ~ 2.20%，Ta:1.90% ~ 2.20%，Co:0.30% ~ 0.40%，Si:0.60% ~ 1.50%，Cr:11.5% ~ 14.0%，Ni:1.90% ~ 2.20%，Cu:1.90% ~ 2.20%，RE:0.20% ~ 0.90%，Remaining is Fe.
- Alloy material the most according to claim 1, it is characterised in that described RE includes, La:0.10% ~ 0.45%, Lu:0.10% ~ 0.45%, remaining is Fe.
- Alloy material the most according to claim 1, it is characterised in that described material composition and mass percent thereof be: C:0.21%, Mn:0.36%, S:0.03%, P:0.03%, B:1.92%, V:1.92%, Ti:1.37%, Nb:1.92%, Ta:1.92%, Co:0.34%, Si:1.0%, Cr:13.0%, Ni:1.92%, Cu:1.92%, La:0.25%, Lu:0.35%, remaining is Fe.
- 4. the preparation method according to alloy material described in any one of claim 1 ~ 3, it is characterised in that making step is as follows:Step a, will treat that Fe, Mn, V, Ti, Nb, T, Co, Cr, Ni, Cu, RE simple substance of melting, according to material composition ratio, adds in the vacuum chamber of water jacketed copper crucible, evacuation, melted under the conditions of sintering temperature is 960 DEG C ~ 980 DEG C；Step b, under conditions of metal melting, add C, S, P, B, Si simple substance according to material composition ratio, and be incubated 25min ~ 50min, stir；Step c, at noble gas pressurized conditions borehole cooling to 630 DEG C of tempering, be incubated 25min ~ 40min, then be warming up to 950 DEG C of annealing, insulation 25min ~ 40min, be finally cooled to room temperature, obtain marine drilling platform brine system alloy material finished product.
- Preparation method the most according to claim 4, it is characterised in that in step a, when the temperature of described sintering is 960 DEG C ~ 970 DEG C, RE consists of La.
- Preparation method the most according to claim 4, it is characterised in that in step a, when the temperature of described sintering is 970 DEG C ~ 980 DEG C, RE consists of La and Lu.
- Preparation method the most according to claim 4, it is characterised in that described step S03 particularly as follows:, under neon or argon gas atmosphere, under the pressurized conditions that pressure is 45MPa ~ 55MPa, be cooled to 630 DEG C of tempering with the speed of 45 DEG C/min ~ 55 DEG C/min, be incubated 15min ~ 40min；, again with the ramp of 45 DEG C/min ~ 55 DEG C/min to 950 DEG C of annealing, be incubated 15min ~ 40min；, be finally cooled to room temperature, obtain marine drilling platform compressed air system alloy material finished product.
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| CN201610442814.XA CN105821320A (en) | 2016-06-21 | 2016-06-21 | Alloy material for marine drilling platform brine system and preparing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016624A (en) * | 2018-06-08 | 2019-07-16 | 中南大学 | A kind of lanthanum modified high hardness alloy and casting method thereof |
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